1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | |
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19 | package org.apache.hadoop.mapred; |
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20 | |
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21 | import java.io.DataOutputStream; |
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22 | import java.io.IOException; |
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23 | |
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24 | import junit.framework.TestCase; |
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25 | |
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26 | import org.apache.commons.logging.Log; |
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27 | import org.apache.commons.logging.LogFactory; |
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28 | import org.apache.hadoop.conf.Configuration; |
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29 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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30 | import org.apache.hadoop.fs.FileSystem; |
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31 | import org.apache.hadoop.fs.Path; |
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32 | import org.apache.hadoop.io.LongWritable; |
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33 | import org.apache.hadoop.io.Text; |
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34 | import org.apache.hadoop.mapred.lib.IdentityMapper; |
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35 | import org.apache.hadoop.mapred.lib.IdentityReducer; |
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36 | import org.apache.hadoop.util.Progressable; |
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37 | |
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38 | /** |
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39 | * A JUnit test to test that jobs' output filenames are not HTML-encoded (cf HADOOP-1795). |
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40 | */ |
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41 | public class TestSpecialCharactersInOutputPath extends TestCase { |
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42 | private static final Log LOG = |
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43 | LogFactory.getLog(TestSpecialCharactersInOutputPath.class.getName()); |
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44 | |
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45 | private static final String OUTPUT_FILENAME = "result[0]"; |
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46 | |
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47 | public static boolean launchJob(String fileSys, |
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48 | String jobTracker, |
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49 | JobConf conf, |
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50 | int numMaps, |
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51 | int numReduces) throws IOException { |
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52 | |
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53 | final Path inDir = new Path("/testing/input"); |
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54 | final Path outDir = new Path("/testing/output"); |
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55 | FileSystem fs = FileSystem.getNamed(fileSys, conf); |
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56 | fs.delete(outDir, true); |
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57 | if (!fs.mkdirs(inDir)) { |
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58 | LOG.warn("Can't create " + inDir); |
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59 | return false; |
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60 | } |
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61 | // generate an input file |
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62 | DataOutputStream file = fs.create(new Path(inDir, "part-0")); |
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63 | file.writeBytes("foo foo2 foo3"); |
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64 | file.close(); |
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65 | |
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66 | // use WordCount example |
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67 | FileSystem.setDefaultUri(conf, fileSys); |
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68 | conf.set("mapred.job.tracker", jobTracker); |
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69 | conf.setJobName("foo"); |
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70 | |
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71 | conf.setInputFormat(TextInputFormat.class); |
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72 | conf.setOutputFormat(SpecialTextOutputFormat.class); |
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73 | conf.setOutputKeyClass(LongWritable.class); |
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74 | conf.setOutputValueClass(Text.class); |
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75 | conf.setMapperClass(IdentityMapper.class); |
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76 | conf.setReducerClass(IdentityReducer.class); |
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77 | FileInputFormat.setInputPaths(conf, inDir); |
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78 | FileOutputFormat.setOutputPath(conf, outDir); |
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79 | conf.setNumMapTasks(numMaps); |
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80 | conf.setNumReduceTasks(numReduces); |
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81 | |
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82 | // run job and wait for completion |
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83 | RunningJob runningJob = JobClient.runJob(conf); |
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84 | |
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85 | try { |
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86 | assertTrue(runningJob.isComplete()); |
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87 | assertTrue(runningJob.isSuccessful()); |
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88 | assertTrue("Output folder not found!", fs.exists(new Path("/testing/output/" + OUTPUT_FILENAME))); |
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89 | } catch (NullPointerException npe) { |
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90 | // This NPE should no more happens |
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91 | fail("A NPE should not have happened."); |
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92 | } |
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93 | |
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94 | // return job result |
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95 | LOG.info("job is complete: " + runningJob.isSuccessful()); |
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96 | return (runningJob.isSuccessful()); |
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97 | } |
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98 | |
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99 | public void testJobWithDFS() throws IOException { |
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100 | String namenode = null; |
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101 | MiniDFSCluster dfs = null; |
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102 | MiniMRCluster mr = null; |
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103 | FileSystem fileSys = null; |
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104 | try { |
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105 | final int taskTrackers = 4; |
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106 | final int jobTrackerPort = 60050; |
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107 | Configuration conf = new Configuration(); |
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108 | dfs = new MiniDFSCluster(conf, 1, true, null); |
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109 | fileSys = dfs.getFileSystem(); |
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110 | namenode = fileSys.getName(); |
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111 | mr = new MiniMRCluster(taskTrackers, namenode, 2); |
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112 | final String jobTrackerName = "localhost:" + mr.getJobTrackerPort(); |
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113 | JobConf jobConf = new JobConf(); |
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114 | boolean result; |
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115 | result = launchJob(namenode, jobTrackerName, jobConf, |
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116 | 3, 1); |
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117 | assertTrue(result); |
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118 | |
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119 | } finally { |
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120 | if (dfs != null) { dfs.shutdown(); } |
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121 | if (mr != null) { mr.shutdown(); } |
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122 | } |
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123 | } |
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124 | |
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125 | /** generates output filenames with special characters */ |
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126 | static class SpecialTextOutputFormat<K,V> extends TextOutputFormat<K,V> { |
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127 | @Override |
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128 | public RecordWriter<K,V> getRecordWriter(FileSystem ignored, JobConf job, |
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129 | String name, Progressable progress) throws IOException { |
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130 | return super.getRecordWriter(ignored, job, OUTPUT_FILENAME, progress); |
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131 | } |
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132 | } |
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133 | } |
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